mfuuid: Add mfplay GUIDs.

dlls/mfuuid/Makefile.in

 MODULE    = libmfuuid.a
 
 C_SRCS = \
+	mfplay.c \
 	mfuuid.c

dlls/mfuuid/mfplay.c

+/*
+ * Copyright 2021 Nikolay Sivov for CodeWeavers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include "evr.h"
+#include "initguid.h"
+#include "mfplay.h"